Improvement in spring-beds



H. W. LADD.

SPRING-BED.

No. 172,327. Patented MI 18, 1876.

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UNITED STATES PATENT OFFICE.

HERMON w. LADD, on CHELSEA, MASSACHUSETTS.

IMPROVEMENT IN SPRING-BEDS.

Specification forming part of Letters Patent No. 172,327, dated January18, 1876 application filed December 16, 1875.

To all whom it may concern:

Be it known that I, HERMON W. LADD, of Chelsea, of the county ofSufl'olk and State of Massachusetts, have invented a new and usefulImprovement in Spring-Beds; and do hereby declare the same to be fullydescribed in the following specification and represented in theaccompanying drawings, of which Figure 1 denotes a top view, Fig.2 alongitudinal section, Fig. 3 a bottom view, and Fig. 4c a transversesection, of a bed-bottom provided with my invention.

In Fig. 2 the section is taken through the slat-fastenings, while inFig. 4 it is taken through the springs and their support-bar.

My invention relates to the combination of duplex C-springs with twoseries of helical springs, their supportbars, and a series of slats;also, to certain means of connecting the parts of the bottom frame, andalso to the connection of the slats with the springs.

In carrying out my invention I employ, for supporting the series ofslats, two duplex C- springs and two series of tapering spiral springs,there being a series or set ofthe latter to each of the duplexC'springs. I also combine with the slats and the duplex C- springs aseries of lap-plates and springcatches, which are for enabling the slatsto be readily connected with or removed from the C-springs; and,furthermore, I connect the transverseand longitudinal bottom bars bycatch-springs and grooved tenons, all as here inai'ter explained andrepresented.

In the drawings, A A A denote a series of slats, arranged. parallel toeach other, and connected to transverse bands or strips of webbing B BB, disposed at right angles with the said slats and fastened to. theirunder sides. The series of slats rest on two duplex C- springs, D D,formed as shown, and fixed, near their ends, to two transverse bottombars, E E, which are notched from their lower edges upward to receivetwo longitudinal bars, F F. At the junction of each of the bars F witheither of the bars E E there is a pin or tenon, a, which projects fromthe bar F up through the bar E, and is provided with a notch or groove,1), to receive a catch-spring, c, fixed at, one end to the bar E, andarranged thereon as shown particularlyin Fig. 5, which is a top iew ofthe catch-spring and the parts next adjacent thereto. The Said springsand grooved or notched tenons serve to keep the bars E E and F F inconnection, and to allow them to be readily separated, as occasion mayrequire. Furthermore, there is based upon each of the bars E E, andextended up to the crown part 01 of the duplex C-spring attached to saidbar, a series of helical springs, G G G, each of them being properlysecured to the said part 01 and to the support-bar E. There is to eachslat two lap-plates, H H, which, attached to the slat on its under side,extend in like directions and lap under and against cross-straps on thecrown portions d d of the two duplex C-springs.' These lap-plates, witha series of spring-catches, I I I I, secured to some of the slats, andconstructed as shown, serve to hold the slats in connection with thecrowns of the C-springs, and readily admit of their disconnection beingeffected, as may be required.

The peculiar duplex C-sprin gs, while alfording, with the spiralsprings, an elastic support for the slats in vertical directions, permitthem to swing somewhat laterally, thereby allowing the slats, while thebed may be in use, to accommodate themselves to better advantage to aperson than would be the case were they supported upon bands rigidlyfixed at their ends to bars on a level with the slats.

' With my improved bed-bottom the parts can readily be disconnected forbeing packed in a small compass for transportation or otherwise.

I claim as my invention.-

1. In a spring-bed, the combination of the duplex C-springs, asdescribed, with the two series of helical springs Gr, their support-barsE, and the series of slats A,.all being arranged and constructedsubstantiallyas specified.

2. The lower frame-bars E E F F, provided with the notched or groovedte'non's a and the catch-springs 0, arranged as specified.

3. In combination withthe bars E E and their metallic straps D D, theseries of slats A, provided with means, substantially as describedviz.,lap-plates H H and springcatches I Iof connecting them with anddisconnecting them from the said straps D D, all

as set forth.

HERMON W. LADD. Witnesses:

R. H. EDDY, J. R. Snow.

